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do_action( 'update_postmeta', int $meta_id, int $object_id, string $meta_key, mixed $meta_value )

Fires immediately before updating a post’s metadata.

Parameters

$meta_id: (int) ID of metadata entry to update.
$object_id: (int) Post ID.
$meta_key: (string) Metadata key.
$meta_value: (mixed) Metadata value. This will be a PHP-serialized string representation of the value if the value is an array, an object, or itself a PHP-serialized string.

Source

File: wp-includes/meta.php

Used By

Used By	Description
wp-includes/meta.php: update_metadata_by_mid()	Updates metadata by meta ID.
wp-includes/meta.php: update_metadata()	Updates metadata for the specified object. If no value already exists for the specified object ID and metadata key, the metadata will be added.

Changelog

Version	Description
2.9.0	Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/hooks/update_postmeta